16880225 has 12 divisors (see below), whose sum is σ = 21276540. Its totient is φ = 13281600.

The previous prime is 16880221. The next prime is 16880243. The reversal of 16880225 is 52208861.

It can be written as a sum of positive squares in 6 ways, for example, as 6697744 + 10182481 = 2588^2 + 3191^2 .

It is not a de Polignac number, because 16880225 - 2² = 16880221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16880191 and 16880200.

It is not an unprimeable number, because it can be changed into a prime (16880221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4010 + ... + 7059.

It is an arithmetic number, because the mean of its divisors is an integer number (1773045).

Almost surely, 2^16880225 is an apocalyptic number.

It is an amenable number.

16880225 is a deficient number, since it is larger than the sum of its proper divisors (4396315).

16880225 is a wasteful number, since it uses less digits than its factorization.

16880225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11140 (or 11135 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 16880225 is about 4108.5550988152. Note that the first 3 decimals coincide. The cubic root of 16880225 is about 256.5228622307.

The spelling of 16880225 in words is "sixteen million, eight hundred eighty thousand, two hundred twenty-five".